Which statements should the nurse provide to a male client regarding smoking and fertility?

The statement indicating that alcohol can cause erectile dysfunction is accurate and highlights a crucial aspect of male sexual health. Chronic alcohol use can damage the nerves and blood vessels that are vital for achieving and maintaining an erection. As a result, discussing the impact of alcohol on erectile function is pertinent for a male client concerned about fertility and overall health.

While the other statements touch upon relevant topics, they either present misinformation or do not directly connect to both smoking and fertility in the same way. For instance, claiming that marijuana does not affect sperm count is misleading as research indicates that it can negatively impact sperm production and quality. The statement about obesity suggests it has no effect on sperm production, which contradicts evidence showing that obesity can lead to hormonal imbalances affecting fertility. Cessation of smoking indeed improves health and fertility but does not address the specific concern of erectile function as effectively as the impact of alcohol.

Focusing on the relationship between alcohol consumption and erectile dysfunction is essential when counseling clients on factors affecting male fertility and overall sexual health.